i want to unlock my SGH-A707, when i on it the respond i get is phone freeze sim unavailable please contact service provideri want to unlock my SGH-A707, when i on it the respond i get is phone freeze sim unavailable please contact service provider

i want to unlock my SGH-A707, when i on it the respond i get is phone freeze sim unavailable please contact service provider. Can someone pls help me out of this, thanksi want to unlock my SGH-A707, when i on it the respond i get is phone freeze sim unavailable please contact service provider. Can someone pls help me out of this, thanks

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